Liquid crystal display device, method for driving liquid crystal display device, and dual-view display device

Abstract

This invention relates to the field of display technology and discloses a liquid crystal display device, a driving method for the liquid crystal display device, and a dual-view display device. By setting at least first and second liquid crystal pillars with different response characteristics in the composite liquid crystal pillar layer, and using the corresponding first and second TFT driving units in the composite TFT substrate layer to output different driving waveform signals for driving, and cooperating with the corresponding red, green, and blue sub-pixel filters in the filter layer, a single liquid crystal display device can flexibly switch between different display modes. Thus, without sacrificing the technological advantages of any one technology, the advantages of two or more liquid crystal display technologies are organically integrated into the same liquid crystal display device. This effectively solves the problems of limited functionality and single application scenarios of traditional single liquid crystal display technologies, significantly improves the applicability and market competitiveness of liquid crystal display devices, truly achieves multi-purpose functionality, and meets the diversified and high-end demands of the social market for display products.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a liquid crystal display device, a driving method for the liquid crystal display device, and a dual-view display device. Background Technology

[0002] Liquid crystal displays (LCDs), as a mainstream flat panel display technology, are widely used in televisions, computer monitors, smartphones, automotive displays, and other fields. Based on the arrangement and driving method of liquid crystal molecules, LCD technology mainly includes two types: twisted nematic (TN) and in-plane switching (IPS).

[0003] TN-type liquid crystal display technology boasts advantages such as fast response time and low manufacturing cost, making it widely used in scenarios requiring high response speeds, such as gaming monitors. However, TN-type liquid crystal displays suffer from narrow viewing angles and color distortion, limiting their application in the high-end display field.

[0004] IPS-type LCD technology boasts advantages such as wide viewing angles, accurate color reproduction, and good stability, making it highly regarded in the high-end monitor market. However, IPS-type LCD monitors have relatively slow response times, making them difficult to meet the display demands of fast-moving images.

[0005] Therefore, there is an urgent need for a new type of liquid crystal display technology that can perfectly combine multiple liquid crystal display technologies without sacrificing the technological advantages of any one of them, so as to meet the diversified needs of the social market and achieve the effect of one machine serving multiple purposes. Summary of the Invention

[0006] This invention provides a liquid crystal display device, a driving method for the liquid crystal display device, and a dual-view display device to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a liquid crystal display device, the device comprising, from bottom to top, a light source layer, a composite TFT substrate layer, a composite liquid crystal pillar layer, a diffusion layer, and a filter layer; wherein; The composite liquid crystal pillar layer includes a plurality of liquid crystal pillar modules; each liquid crystal pillar module includes at least a first liquid crystal pillar and a second liquid crystal pillar, wherein the first liquid crystal pillar is filled with a first type of liquid crystal material, the second liquid crystal pillar is filled with a second type of liquid crystal material, and the first type of liquid crystal material and the second type of liquid crystal material have different response characteristics. The composite TFT substrate layer includes a plurality of TFT driving modules, each of which is electrically connected to a corresponding liquid crystal pillar module; each of the TFT driving modules includes at least a first TFT driving unit and a second TFT driving unit, and the driving waveform signals of the first TFT driving unit and the second TFT driving unit are different. Each of the first TFT driving units is electrically connected to a corresponding first liquid crystal column to drive the corresponding first liquid crystal column; each of the second TFT driving units is electrically connected to a corresponding second liquid crystal column to drive the corresponding second liquid crystal column. The filter layer includes a plurality of pixel filter components; each pixel filter component includes a red sub-pixel filter, a green sub-pixel filter, and a blue sub-pixel filter; Each red sub-pixel filter is aligned with a corresponding liquid crystal pillar module; each green sub-pixel filter is aligned with a corresponding liquid crystal pillar module; each blue sub-pixel filter is aligned with a corresponding liquid crystal pillar module.

[0008] Furthermore, in the liquid crystal display device, the first liquid crystal column and the second liquid crystal column in each liquid crystal column module are arranged side by side.

[0009] Furthermore, the liquid crystal display device further includes a glass cover plate; The glass cover is disposed on the surface of the filter layer.

[0010] Furthermore, in the liquid crystal display device, the diffusion layer includes a trapezoidal prism layer, a transparent lens layer, and a square prism layer arranged sequentially from bottom to top; The trapezoidal prism layer is used to diffuse the incident light in one pass; The transparent lens layer is used to effectively scatter light emitted from the trapezoidal prism layer back to the square prism layer; The square prism layer is used to diffuse the incident light a second time.

[0011] Furthermore, in the liquid crystal display device, the trapezoidal prism layer includes a plurality of trapezoidal prism components; Each of the trapezoidal prism assemblies includes at least a first trapezoidal prism and a second trapezoidal prism; each first trapezoidal prism is aligned with a corresponding first liquid crystal column; each second trapezoidal prism is aligned with a corresponding second liquid crystal column.

[0012] Furthermore, in the liquid crystal display device, the upper bottom surface of the first trapezoidal prism faces the first liquid crystal column, and the lower bottom surface faces the transparent lens layer; The upper bottom surface of the second trapezoidal prism faces the second liquid crystal column, and the lower bottom surface faces the transparent lens layer; The area of ​​the upper base is smaller than the area of ​​the lower base.

[0013] Furthermore, in the liquid crystal display device, the transparent lens layer includes a plurality of transparent lenses; Each of the transparent lenses is aligned with a corresponding trapezoidal prism assembly.

[0014] Furthermore, in the liquid crystal display device, the square prism layer includes a plurality of square prisms; Each of the square prisms is aligned with a corresponding transparent lens.

[0015] Furthermore, the liquid crystal display device further includes a control unit; The control unit is used to receive and control the first TFT driving unit and / or the second TFT driving unit to work according to the display mode selection signal, so as to realize the switching between different display modes.

[0016] In a second aspect, the present invention provides a driving method for a liquid crystal display device, applied to the liquid crystal display device as described in the first aspect above, characterized in that the method includes: Receive display mode selection signal; When the display mode selection signal is the first display mode, the first TFT driving unit is controlled to work, so as to drive the first liquid crystal column to work, thereby switching to the first display module; When the display mode selection signal is the second display mode, the second TFT driving unit is controlled to work, so as to drive the second liquid crystal column to work, thereby switching to the second display module.

[0017] Thirdly, the present invention provides a dual-view display device, including a dual-view grating and a liquid crystal display device as provided in the first aspect above; The dual-view grating is disposed on one side of the display light direction of the liquid crystal display device, so as to project the display content of the liquid crystal display device onto two different viewing angles.

[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a liquid crystal display device, a driving method for the liquid crystal display device, and a dual-view display device. By setting at least first and second liquid crystal pillars with different response characteristics in the composite liquid crystal pillar layer, and using the corresponding first and second TFT driving units in the composite TFT substrate layer to output different driving waveform signals for driving, and cooperating with the corresponding red, green, and blue sub-pixel filters in the filter layer, a single liquid crystal display device can be flexibly switched between different display modes. Thus, without sacrificing the technological advantages of any one technology, the advantages of two or more liquid crystal display technologies are organically integrated into the same liquid crystal display device. This effectively solves the problems of limited functionality and single application scenarios of traditional single liquid crystal display technologies, significantly improves the applicability and market competitiveness of liquid crystal display devices, truly achieves multi-purpose functionality, and meets the urgent needs of the social market for diversified and high-end display products. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of a liquid crystal display device provided in Embodiment 1 of the present invention; Figure 2 This is a second schematic diagram of the structure of a liquid crystal display device provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the orientation shift of the liquid crystal material provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the driving waveform signal provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram showing the corresponding timing relationship between the driving waveform signal and the red, green, and blue sub-pixels provided in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the red, green, and blue sub-pixel circuits provided in Embodiment 1 of the present invention; Figure 7 This is a flowchart illustrating a driving method for a liquid crystal display device provided in Embodiment 2 of the present invention.

[0021] Figure label: 1. Light source layer, 2. Composite TFT substrate layer, 3. Composite liquid crystal pillar layer, 4. Diffusion layer, 5. Filter layer, 6. Glass cover plate, 7. Control unit; TFT driving module 21; First TFT driving unit 211, second TFT driving unit 212; LCD column module 31; First liquid crystal column 311, second liquid crystal column 312; Pixel filter assembly 51; Red subpixel filter 511, green subpixel filter 512, blue subpixel filter 513; Trapezoidal prism layer 41, transparent lens layer 42, square prism layer 43; Trapezoidal prism assembly 411; First trapezoidal prism 4111, second trapezoidal prism 4112; Clear lens 421; Square prism 431. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] Please refer to Figure 1 This invention provides a liquid crystal display device. The liquid crystal display device adopts a multi-layer stacked structure design. From bottom to top, a light source layer 1, a composite TFT substrate layer 2, a composite liquid crystal pillar layer 3, a diffusion layer 4, and a filter layer 5 are arranged sequentially. The functional layers are precisely stacked between each other through an alignment process to ensure the integrity of the optical path and the consistency of the display effect.

[0025] In this embodiment, the composite liquid crystal pillar layer 3 serves as the core optical modulation structure, and it contains several liquid crystal pillar modules 31. Each liquid crystal pillar module 31 includes at least two independent liquid crystal pillars: a first liquid crystal pillar 311 and a second liquid crystal pillar 312 (that is, it may also include a third liquid crystal pillar or more independent liquid crystal pillars; the more independent liquid crystal pillars there are, the more display modes can be switched). The first liquid crystal pillar 311 is filled with a first type of liquid crystal material, and the second liquid crystal pillar 312 is filled with a second type of liquid crystal material. The first type of liquid crystal material and the second type of liquid crystal material have essential differences in molecular structure, dielectric anisotropy, elastic constant, and response characteristics, thereby causing these two types of liquid crystal materials to exhibit differentiated electro-optic response characteristics under the same or different electric fields. For example, the first type of liquid crystal material may be a TN type liquid crystal material, and the second type of liquid crystal material may be an IPS type liquid crystal material. The composite TFT substrate layer 2 serves as the active driving control structure in this embodiment. It contains several TFT driving modules 21, each electrically connected to a corresponding liquid crystal pillar module 31 via conductive lines to achieve independent driving control of the respective liquid crystal pillar module 31. Each TFT driving module 21 includes at least a first TFT driving unit 211 and a second TFT driving unit 212 (similarly, it may also include a third TFT driving unit or more independent TFT driving units, the number of which is consistent with the number of independent liquid crystal pillars). The first TFT driving unit 211 and the second TFT driving unit 212 are respectively configured with different driving waveform signals to adapt to the electro-optical response characteristics of different types of liquid crystal materials.

[0026] Regarding electrical connections, each first TFT driving unit 211 is electrically connected to a corresponding first liquid crystal pillar 311 via conductive lines. This connection is used to apply a specific driving waveform signal to the corresponding first liquid crystal pillar 311 to drive the first type of liquid crystal material within that pillar to undergo an orientation shift (taking TN-type liquid crystal material as an example). Figure 3 (as shown in (a)); each second TFT driving unit 212 is electrically connected to a corresponding second liquid crystal pillar 312 through a conductive line, and is used to apply another specific driving waveform signal to the corresponding second liquid crystal pillar 312 to drive the second type of liquid crystal material in the second liquid crystal pillar 312 to undergo orientation deflection (taking IPS type liquid crystal material as an example, such as...). Figure 3 (as shown in (b)).

[0027] For example, such as Figure 4 As shown, Figure 4 In the diagram (a), the driving waveform signal of a traditional single TFT driving unit is shown. It can be seen that within one cycle, there is a complete positive half-cycle and a complete negative half-cycle. The positive and negative half-cycles are symmetrically distributed in the time domain and each occupies half the duration of the cycle. Figure 4In the diagram (b), the differentiated driving waveform signals used by the first TFT driving unit 211 and the second TFT driving unit 212 are shown. It can be seen that within one cycle, the driving waveform signal output by the first TFT driving unit 211 has a complete positive half-cycle and a complete negative half-cycle, and the positive and negative half-cycles are symmetrically distributed in the time domain. Simultaneously, the driving waveform signal output by the second TFT driving unit 212 also has a complete positive half-cycle and a complete negative half-cycle, but the phase of its positive and negative half-cycles is offset by half a cycle relative to the driving waveform signal output by the first TFT driving unit 211. That is, when the first TFT driving unit 211 outputs a positive half-cycle, the second TFT driving unit 212 outputs a negative half-cycle; and when the first TFT driving unit 211 outputs a negative half-cycle, the second TFT driving unit 212 outputs a positive half-cycle. Figure 5 As shown, Figure 5 In the diagram (a), the corresponding timing relationship between the driving waveform signal of a traditional single TFT driving unit and the red, green, and blue sub-pixels is shown. Figure 5 In the diagram, (b) represents the timing relationship between the differentiated driving waveform signals output by the first TFT driving unit 211 and the second TFT driving unit 212 and the corresponding red, green, and blue sub-pixels. For example... Figure 6 As shown, Figure 6 The diagram shows the circuitry for red, green, and blue sub-pixels. This circuitry is divided horizontally into three parallel color gamut regions, corresponding to the red sub-pixel region, the green sub-pixel region, and the blue sub-pixel region, respectively. Each color gamut region has multiple rows of sub-pixel circuit units arranged vertically. Each row of sub-pixel circuit units includes a first TFT driving unit 211 and a second TFT driving unit 212 electrically connected to the corresponding liquid crystal pillar.

[0028] The filter layer 5 serves as the color generation structure of this invention, and it contains a plurality of pixel filter components 51. Each pixel filter component 51 includes a red sub-pixel filter 511, a green sub-pixel filter 512, and a blue sub-pixel filter 513, which are used to selectively filter the backlight passing through the corresponding liquid crystal column module 31. That is, the red sub-pixel filter 511 allows red light to pass through while filtering other colors of light through absorption or reflection; the green sub-pixel filter 512 allows green light to pass through while filtering other colors of light through absorption or reflection; and the blue sub-pixel filter 513 allows blue light to pass through while filtering other colors of light through absorption or reflection, so as to achieve full-color display function.

[0029] Regarding the interlayer alignment, each red sub-pixel filter 511 is aligned with a corresponding liquid crystal pillar module 31 in the vertical direction (i.e., the layering direction from bottom to top, the same below); each green sub-pixel filter 512 is aligned with a corresponding liquid crystal pillar module 31 in the vertical direction; and each blue sub-pixel filter 513 is aligned with a corresponding liquid crystal pillar module 31 in the vertical direction, thereby ensuring that each sub-pixel filter and its corresponding liquid crystal pillar module 31 form a one-to-one optical coupling relationship, ensuring the accuracy of color reproduction and the regularity of pixel arrangement.

[0030] This invention, through the provision of at least a first liquid crystal pillar 311 and a second liquid crystal pillar 312 with different response characteristics within the composite liquid crystal pillar layer 3, and by fully utilizing the first TFT driving unit 211 and the second TFT driving unit 212 correspondingly configured within the composite TFT substrate layer 2 to output driving waveform signals with different waveform characteristics for differentiated driving control, and simultaneously cooperating with the red sub-pixel filter 511, green sub-pixel filter 512 and blue sub-pixel filter 513 correspondingly configured within the filter layer 5, achieves flexible switching and intelligent adaptation of a single liquid crystal display device between different display modes.

[0031] Based on the above technical solutions, the embodiments of the present invention can organically integrate the superior characteristics of two or more liquid crystal display technologies into the same liquid crystal display device without sacrificing the inherent technical advantages of any one liquid crystal display technology. This effectively overcomes the inherent defects of traditional single liquid crystal display technologies, such as limited functionality, fixed application scenarios, and difficulty in meeting diverse display needs due to their single technical route. It significantly broadens the applicable scope and application scenarios of liquid crystal display devices, greatly enhances the market competitiveness and added value of liquid crystal display devices, and truly achieves the technical goal of multi-functionality. It fully meets the current market's urgent demand for diversified, high-end, and personalized display products, and has important industrial application value and broad market promotion prospects.

[0032] Please refer to this again. Figure 1 In one embodiment of this invention, the first liquid crystal pillar 311 and the second liquid crystal pillar 312 inside each liquid crystal pillar module 31 are arranged in a parallel manner, that is, the first liquid crystal pillar 311 and the second liquid crystal pillar 312 are arranged side by side in the horizontal direction on the same horizontal plane, and the two are spatially separated by a physical isolation structure or partition wall to ensure that the different types of liquid crystal materials filled inside each do not interfere with each other, while maintaining the close proximity of the optical modulation area, thereby realizing the collaborative work of two differentiated liquid crystal display characteristics in the same sub-pixel area.

[0033] Please refer to this again. Figure 1In one embodiment of this invention, the device further includes a glass cover plate 6; The glass cover 6 is disposed on one side of the surface of the filter layer 5, that is, along the bottom-up direction, the glass cover 6 is located at the top of the filter layer 5, and is tightly attached to the upper surface of the filter layer 5 or covered with a preset gap, to provide physical protection, mechanical support and optical protection for the filter layer 5 and the functional structures below, while also having auxiliary functions such as scratch resistance, dust prevention, moisture prevention and impact resistance, so as to ensure the integrity of the overall structure of the liquid crystal display device, the safety of use and the long-term reliability of operation.

[0034] Please refer to this again. Figure 1 In one embodiment of this invention, the diffusion layer 4 adopts a multi-layer composite optical structure design. Inside it, a trapezoidal prism layer 41, a transparent lens layer 42, and a square prism layer 43 are arranged sequentially from bottom to top. The sub-layers are tightly coupled through optical bonding or precision bonding processes to construct a continuous and efficient light diffusion control path.

[0035] Specifically, the trapezoidal prism layer 41 serves as the primary light diffusion structure of the diffusion layer 4. It is used to receive directional light emitted from the composite liquid crystal column layer 3 and utilizes the inclined plane refraction effect and total internal reflection effect to perform the first optical diffusion treatment on the incident light, so that the originally concentrated beam of light undergoes preliminary broadening and angular dispersion in the lateral direction, thereby providing the basic conditions for the light homogenization of subsequent layers.

[0036] The transparent lens layer 42, serving as the intermediate light-conducting structure of the diffusion layer 4, is disposed between the trapezoidal prism layer 41 and the square prism layer 43. It is used to receive the light emitted from the trapezoidal prism layer 41 after one diffusion, and further uniformly scatter the incident light and guide it to the square prism layer 43 through the equivalent scattering effect generated by its internal micro-surface morphology or doped scattering particles. This makes the light path more uniformly adapted to the width of each sub-pixel filter in the lateral direction, effectively avoiding the problems of uneven brightness and color crosstalk caused by uneven light energy distribution.

[0037] The square prism layer 43 serves as a secondary light diffusion structure of the diffusion layer 4. It receives the light emitted from the transparent lens layer 42 after equivalent scattering and performs secondary diffusion processing on the light using its own characteristics. Through multiple reflections and refractions of the light between the sides of the square prism, the range of the light emission angle is further increased, residual differences in the directionality of the light are eliminated, and finally, the uniform distribution of the emitted light within the viewing angle range is achieved, thereby effectively improving the viewing angle performance and screen brightness consistency of the liquid crystal display device.

[0038] Please refer to this again. Figure 1In one embodiment of this invention, the trapezoidal prism layer 41 adopts a modular array structure design, and has a plurality of trapezoidal prism components 411 arranged periodically inside. Each trapezoidal prism component 411 includes at least two independent trapezoidal prisms, a first trapezoidal prism 4111 and a second trapezoidal prism 4112, which are arranged side by side in the horizontal plane to jointly form an optical coupling structure corresponding to the liquid crystal pillar module 31.

[0039] Regarding the interlayer alignment, each first trapezoidal prism 4111 is precisely aligned with a corresponding first liquid crystal column 311 in the vertical direction to ensure that light emitted from the first liquid crystal column 311 can efficiently enter the effective optical working area of ​​the corresponding first trapezoidal prism 4111; each second trapezoidal prism 4112 is precisely aligned with a corresponding second liquid crystal column 312 in the vertical direction to ensure that light emitted from the second liquid crystal column 312 can efficiently enter the effective optical working area of ​​the corresponding second trapezoidal prism 4112.

[0040] The aforementioned one-to-one optical coupling relationship effectively ensures the optical path matching between the light emitted from different types of liquid crystal columns and the corresponding trapezoidal prisms, avoiding light crosstalk and energy loss.

[0041] In a preferred embodiment of this invention, the first trapezoidal prism 4111 is configured with an inverted trapezoidal structure, that is, its upper bottom surface faces the first liquid crystal column 311, and its lower bottom surface faces the transparent lens layer 42. Correspondingly, the second trapezoidal prism 4112 is also configured with an inverted trapezoidal structure, that is, its upper bottom surface faces the second liquid crystal column 312, and its lower bottom surface faces the transparent lens layer 42.

[0042] In terms of geometric dimensions, the area of ​​the upper base is configured to be smaller than that of the lower base, meaning that both the first trapezoidal prism 4111 and the second trapezoidal prism 4112 exhibit an inverted isosceles trapezoidal cross-sectional profile that is narrower at the top and wider at the bottom. This inverted trapezoidal structure design allows the narrower beam emitted from the lower liquid crystal column to obtain a larger beam broadening area at the upper emission interface after being refracted by the trapezoidal prism. This, in conjunction with the transparent lens layer 42, achieves efficient light diffusion and homogenization, while effectively adapting to the incident aperture requirements of the lower square prism layer 43, ensuring that the optical efficiency and light uniformity of the entire diffusion layer 4 reach their optimal state.

[0043] Please refer to this again. Figure 1 In one embodiment of this invention, the transparent lens layer 42 adopts a modular array structure design, in which a plurality of transparent lenses 421 are arranged periodically inside. Each transparent lens 421 is integrally formed or precision-machined from a high-transmittance optical material, and has a preset thickness, refractive index parameters and surface microstructure characteristics to ensure low loss and high fidelity of light during transmission.

[0044] Regarding the interlayer alignment, each transparent lens 421 is precisely aligned with a corresponding trapezoidal prism assembly 411 in the vertical direction. That is, the effective optical working area of ​​the transparent lens 421 completely coincides with the exit end face of the trapezoidal prism assembly 411 above on the horizontal projection plane or has a preset overlap margin, thereby ensuring that the light emitted from the trapezoidal prism assembly 411 after one diffusion can be completely and without omission incident into the corresponding transparent lens 421.

[0045] The aforementioned one-to-one optical coupling relationship effectively ensures the continuity of the optical path between the trapezoidal prism layer 41 and the transparent lens layer 42, avoids the loss of light at the interlayer interface and the optical crosstalk between adjacent modules, and provides uniform and stable light source input conditions for the subsequent secondary diffusion processing of the square prism layer 43.

[0046] Please refer to this again. Figure 1 In one embodiment of this invention, the square prism layer 43 adopts a modular array structure design, which contains a plurality of square prisms 431 arranged periodically. Each square prism 431 has a preset side length, height and apex angle, and its cross-sectional profile is rectangular. The sides are arranged perpendicular to each other to achieve multi-directional refraction and uniform diffusion of incident light.

[0047] Regarding the interlayer alignment, each square prism 431 is precisely aligned with a corresponding transparent lens 421 in the vertical direction. That is, the effective optical receiving area of ​​the square prism 431 completely coincides with the exit end face of the transparent lens 421 below on the horizontal projection plane or has a preset alignment margin, thereby ensuring that the light emitted from the transparent lens 421 after equivalent scattering can be completely and efficiently incident into the corresponding square prism 431.

[0048] The aforementioned one-to-one optical coupling relationship effectively ensures the continuity of the optical path between the transparent lens layer 42 and the square prism layer 43, avoiding energy loss of light at the interlayer interface and optical crosstalk between adjacent modules. This allows the light, which has been initially homogenized by the transparent lens layer 42, to complete the final secondary diffusion process within the square prism 431, ensuring that the outgoing light reaches a highly uniform spatial distribution state before entering the filter layer 5. This significantly improves the overall brightness uniformity, color consistency, and display quality of the liquid crystal display device.

[0049] Please refer to Figure 2In one embodiment of this invention, the device further includes a control unit 7. This control unit 7, as the core control and scheduling unit of this embodiment, is located in a preset circuit board area inside the liquid crystal display device. It is electrically connected to each TFT driving module 21 in the composite TFT substrate layer 2 via a flexible circuit board or conductive lines. It receives externally input display mode selection signals and, based on the user instructions or system automatic determination results represented by the display mode selection signals, selectively starts / stops and adjusts driving parameters for the operating states of the first TFT driving unit 211 and / or the second TFT driving unit 212, thereby achieving flexible switching and intelligent adaptation between different display modes.

[0050] Specifically, when the display mode selection signal represents the first display mode, the control unit 7 outputs an enable signal and preset driving waveform parameters to the first TFT driving unit 211 in the corresponding TFT driving module 21, controls the first TFT driving unit 211 to be in working state and drive the corresponding first liquid crystal column 311, and at the same time controls the second TFT driving unit 212 to be in non-working state or output a shutdown signal, so that the pixel area is dominated by optical modulation only by the first type of liquid crystal material, presenting the display characteristics corresponding to the first display mode; When the display mode selection signal indicates the second display mode, the control unit 7 outputs an enable signal and preset driving waveform parameters to the second TFT driving unit 212 in the corresponding TFT driving module 21, controls the second TFT driving unit 212 to be in working state and drive the corresponding second liquid crystal column 312, and at the same time controls the first TFT driving unit 211 to be in non-working state or output a shutdown signal, so that the pixel area is dominated by optical modulation only by the second type of liquid crystal material, presenting the display characteristics corresponding to the second display mode; Of course, if there are specific requirements, when the display mode selection signal represents the composite display mode, the control unit 7 can simultaneously output enable signals and differentiated driving waveform parameters to the first TFT driving unit 211 and the second TFT driving unit 212 respectively, control the two to be in working state at the same time and drive the corresponding first liquid crystal column 311 and second liquid crystal column 312 respectively, so that the two types of liquid crystal materials in the pixel area cooperate to participate in optical modulation and present composite display characteristics that combine the advantages of two display technologies.

[0051] Through the intelligent mode switching mechanism of the control unit 7, this embodiment of the invention realizes the adaptive adjustment of the display mode of a single liquid crystal display device in different application scenarios. Users can quickly switch between response speed priority mode, color reproduction priority mode or equalization optimization mode according to actual needs without changing the display device, further expanding the functional diversity and ease of use of the liquid crystal display device.

[0052] Although this invention frequently uses terms such as light source layer and composite TFT substrate layer, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

[0053] Example 2

[0054] Please refer to Figure 7 This invention provides a driving method for a liquid crystal display device, applied to the liquid crystal display device provided in Embodiment 1 above, the method comprising: S101, Receive display mode selection signal; It should be noted that the display mode selection signal can be received from external input through a preset communication interface or user interaction module. The display mode selection signal can originate from a manual mode switching command issued by the user through physical buttons, touch panel, remote control, or host computer software, or it can originate from an intelligent mode switching command automatically determined by the scene recognition module integrated inside the LCD display device based on the characteristics of the current display content.

[0055] The display mode selection signal is transmitted to the control unit in the form of an electrical signal, digital code, or communication protocol data packet. The control unit decodes, verifies, and parses the signal to identify the target display mode type represented therein, providing a decision basis for subsequent mode switching control.

[0056] S102. When the display mode selection signal is the first display mode, control the first TFT driving unit 211 to work, so as to drive the first liquid crystal column 311 to work, thereby switching to the first display module. It should be noted that when determining the display mode selection signal to represent the first display mode, an enable control signal and a first drive waveform parameter configuration command are output to the first TFT driving unit 211 in the corresponding TFT driving module 21 in the composite TFT substrate layer 2. After receiving the enable signal, the first TFT driving unit 211 applies a driving voltage to the pixel electrode of the corresponding first liquid crystal column 311 according to the preset first drive waveform signal (including specific voltage amplitude, pulse width, polarity reversal period, and frequency characteristics). The first type of liquid crystal material filled inside the first liquid crystal column 311 undergoes molecular orientation deflection under the action of the electric field formed by the first drive waveform signal, thereby modulating the polarization state of the incident light and exhibiting the inherent optical response characteristics of the first type of liquid crystal material (e.g., display characteristics prioritizing response speed). At the same time, a shutdown control signal or a non-enable state command is output to the second TFT driving unit 212 in the same TFT driving module 21, so that the second TFT driving unit 212 is in a non-working state, and the corresponding second liquid crystal column 312 remains in its initial orientation state or low light transmittance state because no effective driving voltage is applied, and does not participate in the optical modulation of the current display mode. Through the above selective drive control, the liquid crystal display device is switched to a first display mode dominated by the first type of liquid crystal material, such as the TN type liquid crystal display mode, to adapt to application scenarios with high response speed requirements.

[0057] S103. When the display mode selection signal is the second display mode, control the second TFT driving unit 212 to work, so as to drive the second liquid crystal column 312 to work, thereby switching to the second display module.

[0058] It should be noted that when determining that the display mode selection signal represents the second display mode, an enable control signal and a second driving waveform parameter configuration command are output to the second TFT driving unit 212 in the corresponding TFT driving module 21 in the composite TFT substrate layer 2. After receiving the enable signal, the second TFT driving unit 212 applies a driving voltage to the pixel electrode of the corresponding second liquid crystal column 312 according to the preset second driving waveform signal (including voltage amplitude, pulse width, polarity reversal period, and frequency characteristics that are different from the first driving waveform signal). The second type of liquid crystal material filled inside the second liquid crystal column 312 undergoes molecular orientation deflection under the action of the electric field formed by the second driving waveform signal, thereby modulating the polarization state of the incident light and exhibiting the inherent optical response characteristics of the second type of liquid crystal material (such as wide viewing angle and accurate color reproduction display characteristics). Simultaneously, a shutdown control signal or a non-enable state command is output to the first TFT driving unit 211 within the same TFT driving module 21, causing the first TFT driving unit 211 to be in a non-working state. The corresponding first liquid crystal pillar 311 remains in its initial alignment state or low-transmittance state because no effective driving voltage is applied, and does not participate in optical modulation in the current display mode. Through the above selective driving control, the entire liquid crystal display device switches to a second display mode dominated by a second type of liquid crystal material, such as an IPS-type liquid crystal display mode, to adapt to application scenarios with high image quality requirements.

[0059] Through the coordinated execution of the above steps S101-S103, the liquid crystal display device driving method provided in this embodiment of the invention realizes intelligent and automated mode switching control based on the display mode selection signal, enabling the same liquid crystal display device to flexibly switch between different display modes. Users can obtain the optimal display performance according to actual application needs without changing hardware devices, effectively improving the functional diversity of the liquid crystal display device and the user experience.

[0060] Example 3

[0061] This invention provides a dual-view display device, including a dual-view grating and a liquid crystal display device as described in Embodiment 1 above; The specific structure, components, and interconnections of the liquid crystal display device have been described in detail in Embodiment 1 above, and will not be repeated here.

[0062] The dual-view grating is disposed on one side of the liquid crystal display device in the direction of light emission, i.e., on the visible side (or observation side) of the liquid crystal display device, and is arranged opposite to the display surface of the liquid crystal display device at a predetermined distance. This dual-view grating is used to spatially modulate the display light emitted by the liquid crystal display device. Utilizing the beam-splitting principle of the grating, the display content of the liquid crystal display device is projected onto two different viewing directions, thereby forming a first viewing direction and a second viewing direction. This allows observers located in the two different viewing areas to view independent and non-interfering display images.

[0063] Preferably, the dual-view grating can be any one of a slit grating, a cylindrical lens grating, or a liquid crystal grating, so as to be flexibly selected according to actual application requirements, and to reduce manufacturing costs and process complexity while ensuring light efficiency and viewing angle separation effect.

[0064] When the dual-view grating works in conjunction with the liquid crystal display device, the display image presented by the liquid crystal display device in a specific display mode is modulated by the dual-view grating to project a first viewpoint image for a left-side observer in the first viewing direction, and a second viewpoint image for a right-side observer in the second viewing direction. The first and second viewpoint images can be different perspective images of the same scene, thus providing two observers with a stereoscopic binocular parallax image simultaneously; alternatively, they can be completely independent screens with different content, such as navigation information on the left and audio-visual entertainment content on the right, thereby achieving the goal of satisfying the personalized viewing needs of multiple users on the same display device.

[0065] Finally, it should be noted that although the above embodiments have been described in the description and drawings of this invention, this should not limit the scope of patent protection of this invention. Any technical solutions that are based on the essential concept of this invention, utilize the content described in the description and drawings of this invention to make equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this invention.

Claims

1. A liquid crystal display device, characterized in that, The device comprises, from bottom to top, a light source layer (1), a composite TFT substrate layer (2), a composite liquid crystal pillar layer (3), a diffusion layer (4), and a filter layer (5); wherein, The composite liquid crystal pillar layer (3) includes a plurality of liquid crystal pillar modules (31); each liquid crystal pillar module (31) includes at least a first liquid crystal pillar (311) and a second liquid crystal pillar (312), the first liquid crystal pillar (311) is filled with a first type of liquid crystal material, the second liquid crystal pillar (312) is filled with a second type of liquid crystal material, and the first type of liquid crystal material and the second type of liquid crystal material have different response characteristics. The composite TFT substrate layer (2) includes a plurality of TFT driving modules (21), each of the TFT driving modules (21) being electrically connected to a corresponding liquid crystal pillar module (31); each of the TFT driving modules (21) includes at least a first TFT driving unit (211) and a second TFT driving unit (212), and the driving waveform signals of the first TFT driving unit (211) and the second TFT driving unit (212) are different; Each of the first TFT driving units (211) is electrically connected to a corresponding first liquid crystal column (311) to drive the corresponding first liquid crystal column (311); each of the second TFT driving units (212) is electrically connected to a corresponding second liquid crystal column (312) to drive the corresponding second liquid crystal column (312). The filter layer (5) includes a plurality of pixel filter components (51); each pixel filter component (51) includes a red sub-pixel filter (511), a green sub-pixel filter (512) and a blue sub-pixel filter (513). Each of the red sub-pixel filters (511) is aligned with a corresponding liquid crystal pillar module (31); each of the green sub-pixel filters (512) is aligned with a corresponding liquid crystal pillar module (31); and each of the blue sub-pixel filters (513) is aligned with a corresponding liquid crystal pillar module (31).

2. The liquid crystal display device according to claim 1, characterized in that, In each of the liquid crystal column modules (31), the first liquid crystal column (311) and the second liquid crystal column (312) are arranged side by side.

3. The liquid crystal display device according to claim 1, characterized in that, The device also includes a glass cover (6). The glass cover plate (6) is disposed on the surface of the filter layer (5).

4. The liquid crystal display device according to claim 1, characterized in that, The diffusion layer (4) includes a trapezoidal prism layer (41), a transparent lens layer (42), and a square prism layer (43) arranged sequentially from bottom to top. The trapezoidal prism layer (41) is used to diffuse the incident light in one pass; The transparent lens layer (42) is used to effectively scatter the light emitted from the trapezoidal prism layer (41) to the square prism layer (43). The square prism layer (43) is used to diffuse the incident light in a secondary manner.

5. The liquid crystal display device according to claim 4, characterized in that, The trapezoidal prism layer (41) includes a plurality of trapezoidal prism components (411). Each of the trapezoidal prism assemblies (411) includes at least a first trapezoidal prism (4111) and a second trapezoidal prism (4112); each of the first trapezoidal prisms (4111) is aligned with a corresponding first liquid crystal column (311); each of the second trapezoidal prisms (4112) is aligned with a corresponding second liquid crystal column (312).

6. The liquid crystal display device according to claim 5, characterized in that, The upper bottom surface of the first trapezoidal prism (4111) faces the first liquid crystal column (311), and the lower bottom surface faces the transparent lens layer (42). The upper bottom surface of the second trapezoidal prism (4112) faces the second liquid crystal column (312), and the lower bottom surface faces the transparent lens layer (42). The area of ​​the upper base is smaller than the area of ​​the lower base.

7. The liquid crystal display device according to claim 5, characterized in that, The transparent lens layer (42) includes a plurality of transparent lenses (421). Each of the transparent lenses (421) is aligned with a corresponding trapezoidal prism assembly (411).

8. The liquid crystal display device according to claim 6, characterized in that, The square prism layer (43) includes a plurality of square prisms (431). Each of the square prisms (431) is aligned with a corresponding transparent lens (421).

9. The liquid crystal display device according to claim 1, characterized in that, The device also includes a control unit (7). The control unit (7) is used to receive and control the first TFT driving unit (211) and / or the second TFT driving unit (212) to work according to the display mode selection signal, so as to realize the switching between different display modes.

10. A driving method for a liquid crystal display device, applied to the liquid crystal display device as described in any one of claims 1-9, characterized in that, The method includes: Receive display mode selection signal; When the display mode selection signal is the first display mode, the first TFT driving unit (211) is controlled to work, so as to drive the first liquid crystal column (311) to work, thereby switching to the first display module; When the display mode selection signal is the second display mode, the second TFT driving unit (212) is controlled to work, so as to drive the second liquid crystal column (312) to work, thereby switching to the second display module.

11. A dual-view display device, characterized in that, Includes a dual-view grating and a liquid crystal display device as described in any one of claims 1-9; The dual-view grating is disposed on one side of the display light direction of the liquid crystal display device, so as to project the display content of the liquid crystal display device onto two different viewing angles.

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